Dataset on the impact of UV, nitric acid and surfactant treatments on low-density polyethylene biodegradation

Present investigation evaluates the LDPE (low-density polyethylene) biodegradation efficiency of polymer degrading bacteria along with UV, nitric acid and surfactant treatments. In current scenario LDPE contamination reported as dominant pollutant in terrestrial and aquatic ecosystem due to its expulsion from commercial and domestic practices. Biodegradation serve as an innovative and effective approach to waste management as compared to land filling and burning processes. The outcomes of UV, nitric acid and surfactant treatments on polymer degradation in addition to bacterial treatment were determined by SEM, FT-IR and electrical conductivity analysis.


a b s t r a c t
Present investigation evaluates the LDPE (low-density polyethylene) biodegradation efficiency of polymer degrading bacteria along with UV, nitric acid and surfactant treatments. In current scenario LDPE contamination reported as dominant pollutant in terrestrial and aquatic ecosystem due to its expulsion from commercial and domestic practices. Biodegradation serve as an innovative and effective approach to waste management as compared to land filling and burning processes. The outcomes of UV, nitric acid and surfactant treatments on polymer degradation in addition to bacterial treatment were determined by SEM, FT-IR and electrical conductivity analysis.
& 2017 The Authors. Published by Elsevier Inc. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Table   Subject  The relationship between the physical, chemical and biological treatments Data accessibility The data are available with this article

Value of the data
This data could be used as systematic tool for increasing polymer degradation. This data will also help in developing the specific and appropriate approach for polymer degradation in a sustainable manner.
This data represented the impact of physical and chemical treatments on the LDPE biodegradation.

Data
The dataset of this article described the consequence of physical and chemical treatments, which include UV, nitric acid and surfactant treatments in LDPE degradation in addition to polymer degrading bacterial strains (Bacillus subtilis V8, Paracoccus aminophilus B1 4-, Pseudomonas putida C 2 5, Pseudomonas aeruginosa V1 and Acinetobacter calcoaceticus V4). The Figs. 1-3 show the scanning electron microscopy (SEM) micrographs of UV, nitric acid and surfactant treated biodegraded polymer    Figs. 7-9 show the electrical conductivity property of UV, nitric acid and surfactant treated biodegraded polymer samples. Electrical conductivity examination is an advanced approach for analyzing the electrical properties of polymer. The examination of electrical conductivity is used for determining the consequences for bacterial growth on polymer surface [3,4,12,17,22]. Bacterial treatment helps in developing electrical conductivity due to bacterial growth on polymer surface and the bacterial presences on it. Such techniques serve as the promising way to analyze the alteration in pure and treated polymer samples. These techniques are facilitated to examine the reproducibility of degradations.

Experimental design, materials and methods
The consequences of UV, nitric acid and surfactant treatment on polymer degradation in addition to bacterial treatment were determined by SEM, FT-IR and electrical conductivity analysis. Treated polymer samples were exploited in biodegradation experiment to increase the biodegradation ability of isolated bacterial strains. The 365 nm wave length UV light was used to irradiate polymer strips. Polymer (LDPE) strips of 2 cm diameter (weight 0.247-0.408 g) were placed into a UV box (14 by Fig. 4. Graph A-E for bacterial treatments with control (untreated LDPE). FT-IR spectra in A for treatment (Bacillus subtilis V8 þ UV treated LDPE), B for treatment (Paracoccus aminophilus B1 4-þ UV treated LDPE), C for treatment (Pseudomonas putida C 2 5 þ UV treated LDPE), D for treatment (Pseudomonas aeruginosa V1 þ UV treated LDPE) and E for treatment (Acinetobacter calcoaceticus V4 þ UV treated LDPE). 26 cm) at a distance of 3 cm from the light source for 8 weeks. UV treated polymer strips were aseptically transferred to mineral broth medium and subjected to biodegradation by isolated bacterial cultures [10,13,14]. In nitric acid treatment strips were treated with nitric acid (99.0%) at 80°C for 6 days. After nitric acid treatment polymer strips were aseptically transferred to mineral broth medium and subjected to biodegradation by isolated bacterial cultures [2,7,14,21]. The growth of microorganisms effected in the presence of surfactant. Tween 80 (nonionic surfactant) was added at concentration of 0.05% v/v to the media to test the effect of these substances on bacterial attachment to polymer and LDPE degradation by bacterial isolates compared with control sample [1,6,7,9,19,20]. At the end of incubation samples were recovered from culture media and analyzed for degradation by using SEM, FT-IR and electrical conductivity examination [3][4][5]8,11,12,15,16,18].  5. Graph A-E for bacterial treatments with control (untreated LDPE). FT-IR spectra in A for treatment (Bacillus subtilis V8 þ nitric acid treated LDPE), B for treatment (Paracoccus aminophilus B1 4-þ nitric acid treated LDPE), C for treatment (Pseudomonas putida C 2 5 þ nitric acid treated LDPE), D for treatment (Pseudomonas aeruginosa V1 þ nitric acid treated LDPE) and E for treatment (Acinetobacter calcoaceticus V4 þ nitric acid treated LDPE).